Crow Cams / Genuine GM Complete LS3 engine kit with LSA Forged Crank
Crow Cams / Genuine GM Complete LS3 engine kit with LSA Forged Crank
A genuine GM component package supplied by Crow Cams for a professionally assembled LS3-based engine build. The package is unassembled and its crankshaft and timing-drive configuration must be matched to the finished engine.
Product specifications
| Supplier part number | LS3ENGINELSA |
|---|---|
| Component brand | Genuine GM |
| Product category | Crankshafts |
Application and fitment
Unassembled LS3-based engine-component package using an LSA forged crankshaft. Confirm the eight-bolt flange, timing drive, rotating assembly and intended engine-management system.
Supplied contents
- LSA forged crankshaft — 12641691
- Single-row timing set — CS8LSA-SR
- LS3 aluminium block — 12673475
- LS3 cylinder heads — 12675871
- L98 front cover — 12633906
- LS3 valley cover — 12598832
- L98 oil pickup and screen — 12611904
- LS oil-pump kit — LSOILPUMPKIT
- Timing-chain guide — 12588670
- Oil plug — 12573460
- Push-on EGR hose fitting — 12594779
- Rear cover — 12639250
- Sump gasket — 12612350
- Water-pump gaskets, two — 12630223-2
- Oil-cooler block-off gaskets — 12611384
- Oil-cooler gaskets, two — 15203889
- Cam retaining-plate kit — LSCAMPLATEKIT
- LS7 lifter and guide kit — LS7LIFTERKIT
- Lifter-guide bolt set — 12551163-4
- Head-bolt set — 17800568-2
- Cam bolts — 12556127-3
- Balancer bolt — 12557840
- L98 rocker kit — L98ROCKERKIT
- Right rocker cover — 12637684
- Left rocker cover — 12642655
- Oil-fill tube — 12609623
- Oil-fill cap — 12642163
- VRS gasket kit — 92512704
- Oil-pressure sensor — 12673134
- Crank-position sensor — 12703627
- Dipstick tube — 12625031
- Dipstick — 12669528
- Head dowels, four — 12570326
- Main-cap cross-bolt set — 12556127-10
The above is the recovered supplier package list. Confirm the final supplied quantities and any substitutions before purchase. Pistons, connecting rods, bearings, camshaft, fuel system and other unlisted components must be selected separately for the intended build.
Installation and configuration
- This is an unassembled engine-component package or bare block, not a ready-to-run engine. Confirm every included component and the separately required rotating assembly, camshaft, bearings and ancillary parts.
- A qualified engine builder must verify machining, bore and stroke, piston/rod clearances, compression ratio, bearing clearances, fastener specifications, oiling, balance and final assembly.
- Select the correct crankshaft reluctor, cam timing drive, flexplate/flywheel, ECU and transmission interface. Confirm the finished engine configuration before ordering.
Associated products and selection
BBT can confirm the exact engine-specific supporting components and provide a complete parts recommendation before ordering.
BBT product selection and workshop support
Built by Boost & Tune is an authorised Crow Cams dealer and performance engine workshop. We can assist with the correct camshaft profile, compatible valve-train hardware, engine preparation, installation and calibration. Provide the exact engine code, intended use and existing components so the complete package can be checked before ordering.
Freight and order confirmation
This is a large/heavy component that requires freight to be confirmed for the delivery address before final supply. BBT will confirm the exact component identity, availability and freight method before the order proceeds. It is not treated as a standard small-parcel Crow item.